Home / 8,623.11-12,939.81-8,076.45

Finding the Fourth Proportional to 8,623.11, 12,939.81 and 8,076.45

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Solution

The fourth proportional to 8,623.11, 12,939.81 and 8,076.45 is: 12,119.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,623.11 : 12,939.81 = 8,076.45 : x
  2. Step 2: Convert to fraction form
    8,623.11/12,939.81 = 8,076.45/x
  3. Step 3: Cross multiply
    8,623.11x = 12,939.81 × 8,076.45
  4. Step 4: Simplify right side
    8,623.11x = 104,507,728.47
  5. Step 5: Solve for x
    x = 104,507,728.47/8,623.11
  6. Step 6: Final answer
    x = 12,119.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.